Key Players
- Baker Hughes Company
- Delmon Company USA LLC
- Excalibar Minerals LLC (Subsidiary of Newpark)
- Halliburton Company (Baroid Industrial Drilling Products)
- IMinerals Inc
- KaMin Performance Minerals
- Milwhite
- Newpark Resources Inc
- P & S Barite Mining Co
- Seaforth Mineral & Ore Co. Ltd
